On New Years Eve, 1899, baronet's son Edward Courtney becomes engaged to Kate, his mother's maid, much to the scandal of London society. The film then follows their family through four generations, with separations, joys, tragedies, and service in the Boer War, WWI, and WWII.

Bedelia Carrington is living happily, it appears, in Monte Carlo with her husband Charlie Carrington. But a cultivated young artist, Ben Chaney, begins probing into her past with curious concern. Chaney, who is really a detective, learns that Bedelia's obsession for money has led her, in the past, to husband-poisoning for the insurance money.